16820140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1$

素因数の和:898

約数の個数: 48

約数和(自身を含む): 38060064

約数和(自身を除く): 21239924

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 61, 68, 85, 122, 170, 244, 305, 340, 610, 811, 1037, 1220, 1622, 2074, 3244, 4055, 4148, 5185, 8110, 10370, 13787, 16220, 20740, 27574, 49471, 55148, 68935, 98942, 137870, 197884, 247355, 275740, 494710, 841007, 989420, 1682014, 3364028, 4205035, 8410070, 16820140]

約数ペア:

[(1, 16820140), (2, 8410070), (4, 4205035), (5, 3364028), (10, 1682014), (17, 989420), (20, 841007), (34, 494710), (61, 275740), (68, 247355), (85, 197884), (122, 137870), (170, 98942), (244, 68935), (305, 55148), (340, 49471), (610, 27574), (811, 20740), (1037, 16220), (1220, 13787), (1622, 10370), (2074, 8110), (3244, 5185), (4055, 4148)]